36results about How to "Accurate deflection" patented technology

A flexible endoscope includes a handle, a flexible shaft having a distal end and a proximal end, a coupling mechanism releasably attaching the handle to the distal end of the flexible shaft, an illumination unit disposed in the flexible shaft, the illumination unit providing light to an area in front of the distal end of the flexible shaft, and an imaging unit disposed in the flexible shaft, the imaging unit generating image data of the area in front of the distal end of the flexible shaft, wherein the coupling mechanism includes an electrical channel for transmitting electrical power to the illumination unit and the imaging unit, and a data channel for transmitting the image data from the imaging unit.

A flexible endoscope includes a handle, a flexible shaft having a distal end and a proximal end, a coupling mechanism releasably attaching the handle to the distal end of the flexible shaft, an illumination unit disposed in the flexible shaft, the illumination unit providing light to an area in front of the distal end of the flexible shaft, and an imaging unit disposed in the flexible shaft, the imaging unit generating image data of the area in front of the distal end of the flexible shaft, wherein the coupling mechanism includes an electrical channel for transmitting electrical power to the illumination unit and the imaging unit, and a data channel for transmitting the image data from the imaging unit.

A differential amplifier circuit includes: a differential transistor pair composed of first and second transistors; a first resistance connected to a junction point of the first and second transistors at one terminal and to a first voltage node at the other terminal; second and third resistances provided between the first and second transistors, respectively, and a second voltage node; and first and second passive circuits respectively connected to the second and third resistances, the load characteristics of the passive circuits changing according to a control signal supplied. A ring oscillator is composed of a plurality of such differential amplifier circuits connected in a loop.

In a method of scanning a charged particle beam which can position the scan position to a proper location inside a deflectable range of the scan position of charged particle beam, the scan position of charged particle beam is deflected to a plurality of target objects inside a scan position deflectable region and on the basis of a shift of a target object at a scan location after deflection, the deflection amount at the scan location is corrected.

An arrangement (20) for coupling light into a plate-like guide (25) having two surfaces (23, 24) on opposite sides of the light guide comprises an in-coupling diffraction grating (21) for diffracting an external light beam (26) incident on said in-coupling diffraction grating into the light guide in a direction enabling the in-coupled light beam to propagate within the light guide via total internal reflections at the light guide surfaces (23, 24). According to the present invention, the arrangement further comprises a deflection member (22) arranged to deflect the beam (27) initially diffracted by the in-coupling diffraction grating (21), before it hits the in-coupling diffraction grating again, out of the path determined by the in-coupling diffraction grating in order to reduce out-coupling of the already in-coupled light through the in-coupling diffraction grating.

In an electrostatically controlled deflection apparatus, such as a MEMS array having cavities formed around electrodes and which is mounted directly on a dielectric or controllably resistive substrate in which are embedded electrostatic actuation electrodes disposed in alignment with the individual MEMS elements, a mechanism is provided to mitigate the effects of uncontrolled dielectric surface potentials between the MEMS elements and the electrostatic actuation electrodes, the mechanism being raised electrodes relative to the dielectric or controllably resistive surface of the substrate. The aspect ratio of the gaps between elements (element height to element separation ratio) is at least 0.1 and preferably at least 0.5 and preferably between 0.75 and 2.0 with a typical choice of about 1.0, assuming a surface fill factor of 50% or greater. Higher aspect ratios at these fill factors are believed not to provide more than marginal improvement.

The invention relates to a turbo-machine comprising a rotor, a stator, and a flow channel for an actuating fluid used to drive the rotor. Said turbo-machine comprises a magnet for producing a pre-determinable magnetic field in the flow channel. The invention also relates to a method for operating a turbo-machine comprising a rotor, a stator, and a flow channel. According to the invention, an ion-containing actuating fluid flows through the flow channel and a defined magnetic field is produced in the flow channel, ions being deviated in the magnetic field.

The invention provides a specific track rotating arm type hydraulic tensioning device for vehicle body assembly. The specific track rotating arm type hydraulic tensioning device is installed on a high-precision T-shaped groove plate arranged in the full-length direction. Flexible adjustment in the longitudinal direction and the width direction of a vehicle body is adjusted through a longitudinal adjusting mechanism and a transverse adjusting mechanism. A pressing mechanism comprises a pressing arm, one end of the pressing arm is rotationally connected with a connecting block, and the other end of the pressing arm is used for pressing the assembled vehicle body. The pressing arm is provided with a sliding groove. A pin penetrates the sliding groove to slide in the sliding groove. The two ends of the pin are fixed to a supporting plate which is fixed to a supporting base. One end of a connecting block is connected with a piston rod of a hydraulic driving mechanism which is installed at the lower end of a supporting base, a sliding groove capable of moving along a specific track and a rotating arm capable of moving along a specific track are designed and move along the specific track, it is guaranteed that the rotating arm is tensioned to reach a tensioned position, a tensioning arm is driven by a hydraulic system to achieve automatic and accurate tensioning, it is guaranteed that a bottom frame is automatically assembled in place, deflection accuracy of the vehicle body is guaranteed, and the vehicle body assembly efficiency is improved.

A charged-particle beam instrument is offered which can cancel out deflection aberrations arising from a first deflector or oblique incidence on the surface of a workpiece without (i) increasing the electrode length, (ii) reducing the inside diameter of the electrode, or (iii) increasing the deflection voltage too much. The instrument has an electron source for producing an electron beam, a demagnifying lens for condensing the beam, an objective lens for focusing the condensed beam onto the surface of the workpiece, the first deflector located behind the demagnifying lens, and a second deflector located ahead of the demagnifying lens. The first deflector determines the beam position on the surface of the workpiece. The second deflector cancels out deflection aberrations arising from the first deflector.

A differential amplifier circuit includes: a differential transistor pair composed of first and second transistors; a first resistance connected to a junction point of the first and second transistors at one terminal and to a first voltage node at the other terminal; second and third resistances provided between the first and second transistors, respectively, and a second voltage node; and first and second passive circuits respectively connected to the second and third resistances, the load characteristics of the passive circuits changing according to a control signal supplied. A ring oscillator is composed of a plurality of such differential amplifier circuits connected in a loop.

A micro-gyroscope for determining a rate of rotation about a Z-axis includes a substrate and two sensor devices each of which comprises at least one drive mass, at least one anchor, drive elements, at least one sensor mass and sensor elements. The drive mass is mounted linearly displaceably in the direction of an X-axis, and can be driven in an oscillatory manner with respect to the X-axis. The sensor mass is coupled to the drive mass by means of springs. The sensor mass is displaceable in the Y-direction, and sensor elements detects a deflection of the sensor mass in the Y-axis. The two sensor devices are disposed parallel to each other and one above the other in the direction of the Z-axis, and the drive mass in these two sensor devices are coupled to each other by means of a coupling spring.

An optical deflector includes a mirror; a piezoelectric actuator adapted to rock the mirror around an axis of the mirror; and a piezoelectric sensor adapted to sense vibrations of the piezoelectric actuator. A control unit includes: a saw-tooth voltage generating block adapted to generate a saw-tooth voltage; an integral block adapted to calculate an integral voltage of a sum of a sense voltage of the piezoelectric sensor and a DC offset characteristic voltage; a DC offset characteristic voltage calculating block adapted to calculate the DC offset characteristic voltage in accordance with the integral voltage; a subtracter block adapted to generate a deviation between the saw-tooth voltage and the integral voltage; and a controller adapted to generate a drive voltage in accordance with the deviation to apply the drive voltage to the piezoelectric actuator.

A device for generating a massage stream in a sanitary tub has an accommodation device that can be attached to an opening in the tub body of the sanitary tub, for accommodating an electric motor having a drive shaft, a propeller having a hub attached to the drive shaft and vanes arranged radially about the hub. There is a rosette arranged on the accommodation device, positioned within the sanitary tub, having edge-side inflow openings, as well as a central outlet opening. The propeller draws water located in the sanitary tub in through the inflow openings, and subsequently transports it back into the sanitary tub, through a guide element arranged in the outlet opening, which can be pivoted relative to the hub axis. The guide element is configured as a guide vane ring and has a ring-shaped bearing shell at the outer end of the guide vanes. The shell moves between a glide surface of the accommodation device that is configured as a sphere surface segment, and a concave contact surface of the rosette.

The invention relates to a printing device used for printing commodities. The printing device comprising a printing head in a defined relative position relative to a printing area on the outer surface of an article or container at least in a printing process, in connection with a sucking device used for sucking sprayed and / or spattered printing ink. The extraction device is spatially and functionally associated with the printing head. The invention further relates to a method for sucking sprayed and / or spattered ink in the vicinity of an exit openings for printing ink of the printing head. The printing head is configured for applying liquid ink to a printing area of an article, a containter, or a bottle or the like, and in a defined relative position relative to a printing area on the outer surface of an article or container at least in a printing process.

A high-power amplifier having a current-adding array is provided for high-speed driving of an inductive element, e.g., a deflection coil of an electron beam gun. The amplifier includes a first voltage node (U1) and a second voltage node (UV), at least one of which is connected to a regulated power supply, and a plurality of first switchable bridges (B11, B12, B13, . . . , B1k) connected in parallel between the first and second voltage nodes. Each switchable bridge includes at least one resistor (R11, R12, R13, . . . , R1k) with a resistance value that is selected so that a first resistor (R11) has a first resistance value WR11 equal to Rmin, a second resistor (R12) has a second resistance value WR12 greater than or equal to WR11 and an n-th resistor has an n-th resistance value WR1n greater than or equal to WR1n−1.

A multichannel sensor unit includes: a multichannel sensor detecting at least one physical variable and outputting sensor data representing the detected physical variable; a main memory storing the sensor data of at least two sensor channels; and at least one additional memory. Instantaneous sensor data are stored in response to a trigger signal in the main memory. The sensor unit outputs first sensor data of a first sensor channel, which are stored in the main memory, in response to a first read command, and stores the additional sensor data in the at least one additional memory in response to the first read command. The sensor unit outputs the sensor data stored in the at least one additional memory in response to a second read command, such that the sensor unit outputs the sensor data from the main memory and the additional memory asynchronously.

A threading device for embroidery machinery performs threading accurately regardless of the type of thread such that it is capable of changing colored thread automatically without intervention of an operator. The threading device includes a needle support mechanism disposed movably facing a hooking member, for preventing deflection of a needle by correcting deflection of the needle, when inserting the hooking member formed in the shape of a hook at a tip of a thread pull-out mechanism in a needle hole.

A charged-particle beam instrument is offered which can cancel out deflection aberrations arising from a first deflector or oblique incidence on the surface of a workpiece without (i) increasing the electrode length, (ii) reducing the inside diameter of the electrode, or (iii) increasing the deflection voltage too much. The instrument has an electron source for producing an electron beam, a demagnifying lens for condensing the beam, an objective lens for focusing the condensed beam onto the surface of the workpiece, the first deflector located behind the demagnifying lens, and a second deflector located ahead of the demagnifying lens. The first deflector determines the beam position on the surface of the workpiece. The second deflector cancels out deflection aberrations arising from the first deflector.

The invention provides a specific track rotating arm type hydraulic tensioning device for vehicle body assembly. The specific track rotating arm type hydraulic tensioning device is installed on a high-precision T-shaped groove plate arranged in the full-length direction. Flexible adjustment in the longitudinal direction and the width direction of a vehicle body is adjusted through a longitudinal adjusting mechanism and a transverse adjusting mechanism. A pressing mechanism comprises a pressing arm, one end of the pressing arm is rotationally connected with a connecting block, and the other end of the pressing arm is used for pressing the assembled vehicle body. The pressing arm is provided with a sliding groove. A pin penetrates the sliding groove to slide in the sliding groove. The two ends of the pin are fixed to a supporting plate which is fixed to a supporting base. One end of a connecting block is connected with a piston rod of a hydraulic driving mechanism which is installed at the lower end of a supporting base, a sliding groove capable of moving along a specific track and a rotating arm capable of moving along a specific track are designed and move along the specific track, it is guaranteed that the rotating arm is tensioned to reach a tensioned position, a tensioning arm is driven by a hydraulic system to achieve automatic and accurate tensioning, it is guaranteed that a bottom frame is automatically assembled in place, deflection accuracy of the vehicle body is guaranteed, and the vehicle body assembly efficiency is improved.

In an industrial robot, correction is made for change in position and attitude of an arm distal end due to mechanical deflection of the robot. In the robot, a moment applied to the first axis in its non-rotation direction opposite to its rotation direction is calculated from a load torque applied to the second axis in its rotation direction, a moment due to a second-axis-side self-weight, and a ratio of a distance between the rotation centers of the first and second axes, to a distance between the rotation centers of the second axis and a tool. A deflection amount indicating an angle of the first axis tilting in the non-rotation direction is calculated from the moment applied to the first axis and the rigidity of the first axis in the non-rotation direction. A control value is corrected based on the deflection amount to control the robot.

The invention discloses a lead wire deflection device which comprises a body (1), a first fixed rod (3), a second fixed rod (4) and a lead wire rod (2), wherein the first fixed rod (3) and the second fixed rod (4) are fixed on one side of the body (1) through screws; the lead wire rod (2) is fixed on the inner side of the body (1) and the second fixed rod (4) through a rotating shaft (41); a positioning hole (31) is arranged in the middle position of the first fixed rod (3); and a positioning bulge (21) is arranged on the lead wire rod (2), corresponding to the positioning hole (31). The lead wire deflection device has two states which are working state and stationary state respectively, when the lead wire deflection device is in a swing state, the positioning bulge (21) is positioned at the middle position of the positioning hole (31); and when the lead wire deflection device is in the stationary state, the positioning bulge (21) is positioned at each of the two ends of the positioning hole (31). The deflection of the lead wire rod is accurate through the design of the positioning hole, and the phenomenon that the lead wire rod is separated from a track due to too large swing amplitude can be also avoided.